Writing Equations
The correct equation to represent the following situation
Ms. Erica is selling chocolate chip cookies for 1$ and brownies for 2. She wants to know the total she made in sales in a day.
a) 2c - 2b = 4cb
b) c + 2b = e
c) e - bc = 2
What is b)
An equavalent equation to the following:
3x + 2y - 6 is....
a) 3x = -2y + 6
b) 5xy = - 6
What is a)
This equation will describe this mathematical truth:
In a solid shape, if you add the number of vertices, V, and the number of faces, F, then subtract 2, you get the number of edges in the shape, E.
Isolate the variable x in this equation.
10.30 + 3.03m = t
Isolate the variable y in the following equation:
10 - 5y = 50xy = - (5x - 10)/5
The Department of Streets of a city has a budget of $1,962,800 for resurfacing roads and hiring additional workers this year.
The cost of resurfacing a mile of 2-lane road is estimated at $84,000. The average starting salary of a worker in the department is $36,000 a year.
Write an equation that represents the relationship between the miles of 2-lane roads the department could resurface, m, and the number of new workers it could hire, w, if it spends the entire budget.
8,400m + 3,600w = 1,962,800
Isolate the variable y in the following equation:
1.8x = 6y + 10 - 2y
y = (1.8x-10)/4